NCERT Solutions for Class 4 Maths Mela Chapter 4 Thousands Around Us

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Jaspreet and Gulnaz are organising a langar (a community lunch) in their neighbourhood Gurudwara. They expect around one thousand (1000) people to be fed on that day. Fifty-five people volunteer to serve during this event. Jaspreet and Gulnaz receive many donations.

The donations are shown in the table below. Write the number in each case.

See Answera) 39
b) 74
c) 103
d) 93
e) 482
f) 25
g) 12
h) 50
i) 65
j) 322

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Jaspreet and Gulnaz record the number of people who come for the community lunch at different times.
Write the time and draw the number of people who had food at different time slots using HTO blocks as shown below.

See Answera) 12:00 to 12:30
b) 12: 30 to 01: 00
c) 01: 00 to 01: 30
d) 01: 30 to 02: 00

The time slot when the most number of people came for lunch is _____________________.
See AnswerThe time slot when the most number of people came for lunch is 01: 30 to 02: 00

The time slot when the least number of people came for lunch is _____________________.
See AnswerThe time slot when the least number of people came for lunch is 12:00 to 12:30

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Let Us Do

1. (a) Make 3-digit numbers using the digit 3 and 7. Write the number in the boxes given below. Circle the smallest and cross out the largest.

See Answer337, 373, 733
377, 737, 773
Smallest: 333
Largest: 777

(b) Make six 3-digit numbers using the digits 3, 5, 0, 8 such that all numbers are less than 550. You can repeat the digits.

See Answer358, 385, 538, 503, 530, 350

(c) Mark the numbers you made in 1 (b) on the number line.

See AnswerThe numbers 350, 358, 385, 503, 530, and 538 would be marked between 300 and 550 on the number line.

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2. Fill in the blanks with appropriate numbers.

See Answera) 787, 788, 789, 790, 791, 792, 793, 794, 795, 796, 797, 798, 799, 800, 801, 802, 803, 804, 805, 806.
b) 934, 933, 932, 931, 930, 929, 928, 927, 926, 925.
c) 629, 639, 649, 659, 669, 679, 689, 699, 709, 719, 729.
d) 333, 338, 343, 348, 353, 358, 363, 368, 373, 378.
e) 167, 267, 367, 467, 567, 667, 767, 867, 967, 1067.

You remember that Gulnaz and Jaspreet has kept track of the people who came for the community lunch.
Let us see

How many people came from the community lunch?
See AnswerTotal people who came for the community lunch: 1032 (Based on the chart that shows numbers from 1 to 1100)

Fill in the blanks with appropriate numbers:

See Answera) 997
b) 998
c) 999
d) 1000
e) 1001
f) 1002
g) 1003
h) 1004
i) 1005

3. Identify the range of numbers most suitable for the following situations. Share your thoughts.

See Answera) Number of children in your village: 500 to 1000
b) Number of tables in your classroom: 10 to 50
c) Number of pages in your math textbook: 100 to 200
d) Number of teachers in your school: 10 to 50
e) Number of leaves in a plant: 50 to 100
f) Number of books in your library: 500 to 1000
g) Number of ants in an anthill: More than 1000
h) Number of books in your classroom: 50 to 100
i) Number of leaves in a tree: More than 1000
j) Number of girls in your school: 200 to 500
k) Number of fingers in your classroom: 500 to 1000
l) Number of children in your school: 500 to 1000
m) Number of letters on this page: 500 to 1000
n) Number of steps to reach school: 100 to 200

Identify things around you that are more than 1000 in number.
See Answer1. Stars in the night sky (billions of stars are in our galaxy alone!)
2. Grains of sand on a beach
3. Leaves on a big tree
4. Drops of water in a bucket
5. Hairs on your head (most people have about 100,000 hairs!)
6. Seeds in a watermelon
7. Ants in an anthill
8. Blades of grass in a playground
9. Cells in your body (trillions of cells!)
10. Raindrops during a rainstorm

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Let Us Break Up One-Thousand

See Answera) We are at 900. How much more to make 1000?…………
100
(900 + 100 = 1000)
b) Mark 800. How much more to make 1000?…………
200
(800 + 200 = 1000)
c) Mark 850. How much more to 1000?…………
150
(850 + 150 = 1000)
d) Mark 760. How much more to 1000?…………
240
(760 + 240 = 1000)
e) Mark 400. How much less is 400 than 1000?…………
600
(1000 – 600 = 400)
f) Complete the addition facts leading to 1000:
705 + 295 = 1000
830 + 170 = 1000
497 + 503 = 1000
895 + 105 = 1000
775 + 225 = 1000
980 + 20 = 1000
500 + 500 = 1000
670 + 330 = 1000

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Grouping and Regrouping

Answer:

Circle groups of ten 1s, 10s, and 100s as many times as required in each of the following pictures. Fill in the empty boxes.

Answer:

Let Us Solve
Identify and write the numbers for each of the following in your notebook. Draw pictures like these, if needed.
See Answera) 45 Ones = 4 Tens + 5 Ones = 45
b) 39 Ones = 3 Tens + 9 Ones = 39
c) 35 Tens = 3 Hundreds + 5 Tens = 350
d) 86 Tens = 8 Hundreds + 6 Tens = 860
e) 10 Tens and 1 Ones = 1 Hundred + 0 Tens + 1 Ones = 101
f) 15 Tens and 23 Ones = 1 Hundred + 5 Tens + 23 Ones = 1 Hundred + 7 Tens + 3 Ones = 173
g) 34 Tens and 12 Ones = 3 Hundreds + 4 Tens + 12 Ones = 3 Hundreds + 5 Tens + 2 Ones = 352
h) 19 Tens and 10 Ones = 1 Hundred + 9 Tens + 10 Ones = 2 Hundreds + 0 Tens + 0 Ones = 200
i) 2 Hundreds, 13 Tens and 7 Ones = 2 Hundreds + 13 Tens + 7 Ones = 3 Hundreds + 3 Tens + 7 Ones = 337

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Look at the table below and fill in the blanks.

Answers:

1. Write the numbers in a sequence forward and backward as indicated.

See Answera) 1027, 1028, 1029, 1030, 1031, 1032, 1033, 1034
b) 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014
c) 4885, 4886, 4887, 4889, 4890, 4891, 4892, 4893
d) 7996, 7997, 7998, 7999, 8000, 8001, 8002, 8003

Let Us Play
Make the place value slider. Children can take turns to increase or decrease the number as told.
a) 1895 – increase the number by 1
b) 2785 – increase the number by 10
c) 3369 – decrease the number by 2
d) 5648 – decrease the number by 10
e) 6487 – increase the number by 20

See Answera) 1895 – increase the number by 1: 1896
b) 2785 – increase the number by 10: 2795
c) 3369 – decrease the number by 2: 3367
d) 5648 – decrease the number by 10: 5638
e) 6487 – increase the number by 20: 6507

Let Us Think
1. Ram wrote 7 Thousand 0 Hundreds 2 Tens 4 Ones as 724.
Is this correct?……….
Write the correct number……….
2. Richa wrote 5 Thousand 6 Hundreds 0 Tens 3 Ones as 563.
Is this correct?……….
Write the correct number……….
See Answer1. Ram wrote 7 Thousand 0 Hundreds 2 Tens 4 Ones as 724.
a) Is this correct?: No
b) Write the correct number: Correct number: 7024
2. Richa wrote 5 Thousand 6 Hundreds 0 Tens 3 Ones as 563.
a) Is this correct?: No
b) Write the correct number: Correct number: 5603

Number Line

See Answer1. 2236, 3126, 3216
2. Do as instructed.
a) Mark 1043, 1069, and 1084 between 1001 and 1100.
b) Mark 2025, 2080, 2175, 2245, 2295, 2310, 2390, 2430, 2460 between 2000 and 2500.
c) Mark 5512, 5548, 5590, 5636, 5673, 5695 between 5500 and 5725.
d) Mark 8679, 8990, 8923, 8763 between 8500 and 9000.

Let Us Play
1. What cards are used 4085? Write it in expanded form and in words.
See Answer4000 + 0 + 80 + 5
Four Thousand Eighty Five

Find Me! Read aloud the numbers and locate them in the grid.

1. The number 3782
See Answer382
2. Two thousand five hundred and seventy six.
See Answer2576
3. A 4- digit number with all digits the same.
See Answer2222
4. The smallest 4 digit number in this table.
See Answer1000
5. The largest 4 digit number in this table.
See Answer9483
6. A number more than 5000 and less than 5200.
See Answer5010
7. A number between 5600 and 6300.
See Answer5657, 5760
8. A 4 digit number all of whose digits can be found on a die.
See Answer1, 2, 3, 4

Let Us Solve
1. Use tokens of 1s, 10s, 100s, 1000s to identify the numbers and write them in the table.
a) 6 Tens and 22 Ones
b) 4 Tens and 12 Ones
c) 3 Hundreds,  14 Tens, and 8 Ones
d) 12 Hundreds, 18 Tens, and 2 Ones
e) 1 Thousand, 5 Hundreds, 10 Tens, and 17 Ones

Answers:

In the earlier chapters you have already tested the knowledge about the calculation and method of calculation but in this chapter, you will test your knowledge about the time if you have the skills to check and tell the time accurately and quickly.

If you still need more knowledge about the time and how the minutes are been calculated accurately then this chapter is all about this knowledge.

Once you start to understand the concept of counting the minutes and hours you can check on the times and the time you take to get them ready before school and the time you take to reach your school.

The best way to check and practice is to wear a wristwatch if you don’t have it till now get one because if you have time near to you then you might not get late ever.

There are other activities in the chapter about cooking time I liked that activity because during the cooking while you are watching and calculating the time you will get to taste the delicacies before anyone. You can call it double benefits learning with tasty food and you can tell you are studying if someone asks you what are you doing?

Another topic is also given there in a story form. About a girl who is writing a diary about the newborn baby sister. So that one day when her sister grow up she could read the important incidents of her childhood. This is not some new practice because even these days also people make such memories so that their children can enjoy those memories and understand the happiest moments what they bought to their families.

This is something we do in the video format of clicking the picture but this chapter is not that new so maybe at the time when Rani’s younger sister born there weren’t any video capturing machines or any photo capturing machines available. However, she run her mind and check if there is any possible way to preserve all the memories and wrote a diary. Read the story and help her sort out the dates and times that you have learned throughout the study you have done till now.